class SlipTcpClient(SlipClient):
def __init__(self,
address,
port,
database,
ostream,
response_timeout=3.0,
database_response_timeout=10.0):
self.socket = SocketDevice('uart', '0', address, port)
self.socket.start()
super(SlipTcpClient,
self).__init__(database, ostream, response_timeout,
database_response_timeout)
def write(self, buf):
self.socket.write(buf)
def read(self, size):
buf = self.socket.read(size)
if not buf:
print('Connection closed.', file=self.ostream)
_thread.interrupt_main()
raise ClientClosedError()
return buf
class SlipTcpClient(SlipClient):
def __init__(self,
address,
port,
database,
ostream,
response_timeout=3.0,
database_response_timeout=10.0):
self.socket = SocketDevice('uart', '0', address, port)
self.socket.start()
super(SlipTcpClient, self).__init__(database,
ostream,
response_timeout,
database_response_timeout)
def write(self, buf):
self.socket.write(buf)
def read(self, size):
buf = self.socket.read(size)
if not buf:
print('Connection closed.', file=self.ostream)
_thread.interrupt_main()
raise ClientClosedError()
return buf
class Bus(object):
"""A stub communicating over a TCP socket instead of a CAN bus.
"""
def __init__(self, device, *args, **kwargs):
del args
del kwargs
self.device = SocketDevice('can', device)
self.device.start()
def send(self, message):
"""Write given message to the application.
"""
line = "id={:08x},extended={},size={},data=".format(
message.arbitration_id,
1 if message.extended_id else 0,
len(message.data))
line = line.encode('ascii')
line += binascii.hexlify(bytes(message.data))
line += b"\r\n"
self.device.write(line)
def recv(self):
"""Read a message from the application.
"""
line = self.device.readline()
line = line.strip(b'\r\n')
mo = re.match(rb'id=(\w{8}),extended=(\d),size=(\d),data=(\w+)',
line)
arbitration_id = int(mo.group(1), 16)
extended_id = (mo.group(2) == b'1')
length = int(mo.group(3))
data = bytearray(binascii.unhexlify(mo.group(4)[0:2*length]))
return Message(arbitration_id, extended_id, data)
class Serial(object):
"""A stub communicating over a TCP socket instead of a serial port.
"""
def __init__(self, device, *args, **kwargs):
del args
del kwargs
self.device = SocketDevice('uart', device)
self.device.start()
def close(self):
self.device.stop()
def write(self, buf):
self.device.write(buf)
def read(self, length=1):
return self.device.read(length)
class Bus(object):
"""A stub communicating over a TCP socket instead of a CAN bus.
"""
def __init__(self, device, *args, **kwargs):
del args
del kwargs
self.device = SocketDevice('can', device)
self.device.start()
def send(self, message):
"""Write given message to the application.
"""
line = "id={:08x},extended={},size={},data=".format(
message.arbitration_id, 1 if message.extended_id else 0,
len(message.data))
line = line.encode('ascii')
line += binascii.hexlify(bytes(message.data))
line += b"\r\n"
self.device.write(line)
def recv(self):
"""Read a message from the application.
"""
line = self.device.readline()
line = line.strip(b'\r\n')
mo = re.match(rb'id=(\w{8}),extended=(\d),size=(\d),data=(\w+)',
line)
arbitration_id = int(mo.group(1), 16)
extended_id = (mo.group(2) == b'1')
length = int(mo.group(3))
data = bytearray(binascii.unhexlify(mo.group(4)[0:2 * length]))
return Message(arbitration_id, extended_id, data)